1#ifndef _UAPI_INET_DIAG_H_
2#define _UAPI_INET_DIAG_H_
3
4#include <linux/types.h>
5
6/* Just some random number */
7#define TCPDIAG_GETSOCK 18
8#define DCCPDIAG_GETSOCK 19
9
10#define INET_DIAG_GETSOCK_MAX 24
11
12/* Socket identity */
13struct inet_diag_sockid {
14	__be16	idiag_sport;
15	__be16	idiag_dport;
16	__be32	idiag_src[4];
17	__be32	idiag_dst[4];
18	__u32	idiag_if;
19	__u32	idiag_cookie[2];
20#define INET_DIAG_NOCOOKIE (~0U)
21};
22
23/* Request structure */
24
25struct inet_diag_req {
26	__u8	idiag_family;		/* Family of addresses. */
27	__u8	idiag_src_len;
28	__u8	idiag_dst_len;
29	__u8	idiag_ext;		/* Query extended information */
30
31	struct inet_diag_sockid id;
32
33	__u32	idiag_states;		/* States to dump */
34	__u32	idiag_dbs;		/* Tables to dump (NI) */
35};
36
37struct inet_diag_req_v2 {
38	__u8	sdiag_family;
39	__u8	sdiag_protocol;
40	__u8	idiag_ext;
41	__u8	pad;
42	__u32	idiag_states;
43	struct inet_diag_sockid id;
44};
45
46/*
47 * SOCK_RAW sockets require the underlied protocol to be
48 * additionally specified so we can use @pad member for
49 * this, but we can't rename it because userspace programs
50 * still may depend on this name. Instead lets use another
51 * structure definition as an alias for struct
52 * @inet_diag_req_v2.
53 */
54struct inet_diag_req_raw {
55	__u8	sdiag_family;
56	__u8	sdiag_protocol;
57	__u8	idiag_ext;
58	__u8	sdiag_raw_protocol;
59	__u32	idiag_states;
60	struct inet_diag_sockid id;
61};
62
63enum {
64	INET_DIAG_REQ_NONE,
65	INET_DIAG_REQ_BYTECODE,
66};
67
68#define INET_DIAG_REQ_MAX INET_DIAG_REQ_BYTECODE
69
70/* Bytecode is sequence of 4 byte commands followed by variable arguments.
71 * All the commands identified by "code" are conditional jumps forward:
72 * to offset cc+"yes" or to offset cc+"no". "yes" is supposed to be
73 * length of the command and its arguments.
74 */
75
76struct inet_diag_bc_op {
77	unsigned char	code;
78	unsigned char	yes;
79	unsigned short	no;
80};
81
82enum {
83	INET_DIAG_BC_NOP,
84	INET_DIAG_BC_JMP,
85	INET_DIAG_BC_S_GE,
86	INET_DIAG_BC_S_LE,
87	INET_DIAG_BC_D_GE,
88	INET_DIAG_BC_D_LE,
89	INET_DIAG_BC_AUTO,
90	INET_DIAG_BC_S_COND,
91	INET_DIAG_BC_D_COND,
92	INET_DIAG_BC_DEV_COND,   /* u32 ifindex */
93	INET_DIAG_BC_MARK_COND,
94};
95
96struct inet_diag_hostcond {
97	__u8	family;
98	__u8	prefix_len;
99	int	port;
100	__be32	addr[0];
101};
102
103struct inet_diag_markcond {
104	__u32 mark;
105	__u32 mask;
106};
107
108/* Base info structure. It contains socket identity (addrs/ports/cookie)
109 * and, alas, the information shown by netstat. */
110struct inet_diag_msg {
111	__u8	idiag_family;
112	__u8	idiag_state;
113	__u8	idiag_timer;
114	__u8	idiag_retrans;
115
116	struct inet_diag_sockid id;
117
118	__u32	idiag_expires;
119	__u32	idiag_rqueue;
120	__u32	idiag_wqueue;
121	__u32	idiag_uid;
122	__u32	idiag_inode;
123};
124
125/* Extensions */
126
127enum {
128	INET_DIAG_NONE,
129	INET_DIAG_MEMINFO,
130	INET_DIAG_INFO,
131	INET_DIAG_VEGASINFO,
132	INET_DIAG_CONG,
133	INET_DIAG_TOS,
134	INET_DIAG_TCLASS,
135	INET_DIAG_SKMEMINFO,
136	INET_DIAG_SHUTDOWN,
137	INET_DIAG_DCTCPINFO,
138	INET_DIAG_PROTOCOL,  /* response attribute only */
139	INET_DIAG_SKV6ONLY,
140	INET_DIAG_LOCALS,
141	INET_DIAG_PEERS,
142	INET_DIAG_PAD,
143	INET_DIAG_MARK,
144	INET_DIAG_BBRINFO,
145	__INET_DIAG_MAX,
146};
147
148#define INET_DIAG_MAX (__INET_DIAG_MAX - 1)
149
150/* INET_DIAG_MEM */
151
152struct inet_diag_meminfo {
153	__u32	idiag_rmem;
154	__u32	idiag_wmem;
155	__u32	idiag_fmem;
156	__u32	idiag_tmem;
157};
158
159/* INET_DIAG_VEGASINFO */
160
161struct tcpvegas_info {
162	__u32	tcpv_enabled;
163	__u32	tcpv_rttcnt;
164	__u32	tcpv_rtt;
165	__u32	tcpv_minrtt;
166};
167
168/* INET_DIAG_DCTCPINFO */
169
170struct tcp_dctcp_info {
171	__u16	dctcp_enabled;
172	__u16	dctcp_ce_state;
173	__u32	dctcp_alpha;
174	__u32	dctcp_ab_ecn;
175	__u32	dctcp_ab_tot;
176};
177
178/* INET_DIAG_BBRINFO */
179
180struct tcp_bbr_info {
181	/* u64 bw: max-filtered BW (app throughput) estimate in Byte per sec: */
182	__u32	bbr_bw_lo;		/* lower 32 bits of bw */
183	__u32	bbr_bw_hi;		/* upper 32 bits of bw */
184	__u32	bbr_min_rtt;		/* min-filtered RTT in uSec */
185	__u32	bbr_pacing_gain;	/* pacing gain shifted left 8 bits */
186	__u32	bbr_cwnd_gain;		/* cwnd gain shifted left 8 bits */
187};
188
189union tcp_cc_info {
190	struct tcpvegas_info	vegas;
191	struct tcp_dctcp_info	dctcp;
192	struct tcp_bbr_info	bbr;
193};
194#endif /* _UAPI_INET_DIAG_H_ */
195